METHOD FOR RECORDING VOLUME MANAGEMENT PROGRAM TO RELOCATE LEVEL OF ACCESSED DATA BLOCK

摘要

PURPOSE: A volume management method is provided to reduce the power consumption rate of storage devices by moving accessed data block to other layers. CONSTITUTION: A volume management unit (240) manages storage devices by constructing layer volumes. An access management unit (210) manages the recording state of a data block. When the data block is accessed, a rearrangement management unit (220) determines the rearrangement of the data block. When the rearrangement of the data block is determined, the rearrangement management unit moves the accessed data block from a current layer to other layers. A mapping management unit (230) manages the logical block number of a file system by connecting a physical block number to the logical block number. [Reference numerals] (210) Access management unit; (220) Rearrangement management unit; (230) Mapping management unit; (240) Volume management unit